While at first glance you might want to applaud their audacity, let’s be blunt: these proposals are absurd. First, there are the obvious problems. SRM doesn’t slow the rising concentration of carbon dioxide in the atmosphere and, therefore, fails to address ocean and aquatic habitat acidification. SRM interventions would unavoidably produce a range of geochemical side effects, such as ozone depletion and changes to hydrological cycles. This translates to greater extremes of wet and dry, and hot and cold, with higher probability of severe droughts in equatorial regions. Consequently, implementing SRM would be tantamount to placing our economic and lifestyle priorities ahead of the basic needs of communities in developing regions already severely stressed by climate change.